Island



UNITED STATES PATENT Ormea.

ALBERT II. TINGLEY, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO HIM- SELF, E. XV. TINGLEY, AND H. F. TINGLEY.

lMPROVEMENT I-NMACHINESFOR SAWING STONEAND MARBLE.

Specification forming part of Letters Patent No. 11,347', dated July 1S, 1854.

reference thereon.

`In the said drawings, Figure lrepresen-ts a top view'gofajmachine containing my invenj Fig. r front or .side elevation of it. Fig. 3f isra sidejview of the secondary ratchet and'itsl set of retaining-pawls, to be hereinaf- 'te'rdescribed v Fig; 4 is a vertical and longitudinal sectionof the crank-,shaft of the said ratchet and* the machinery thereon, all of which' will be hereinafter described.

*The machine on which my improvement is made, orto which my invention is applicable,

is in the main essentially like thatdescribed in the specification and drawings lof -Letters Pat- Y ent vgranted,to'megon the 19th day of March, A. D. 185O.V l

In the drawings of this my improved machine, A represents a gang or series of saws fixed in a horizontal frame B., wh1ch,when in use, .is suspended or placed directly over the block` of marble or stone (seen at C) by means of four chains or cords D-E F Gr, which, 'respectively, dependfrom'and pass over four pulleys or guide-grooves, as seen. at H I K L, made inltwo horizontal'drunis M N, that extend across and are supported on a frame O. The cords or chains are attached to a windlass P, which is arranged on the top of the frame O' and midway between the two drums yM Ng; The chains or cords are so applied to thew ndlass that when said windlass is turned in one direction it shall wind all of them simultaneously upon it, and when it is turned in the other direction it shall unwindthem from it, the Iirst operation serving to raise the gang of saws, While the last is for the purpose of depressing them.

0n one end of the shaft of the windlass D there is a grooved pulley Q, to which one end oa cord- R is fastened, the cord being wound around the periphery of said pulley, the other end of the` said cord being fastened to and wound around a barrel R', 'fastened to a `sprocket-wheel S, the barrel and the sprocketwheel being arranged. as seen in lthe drawings, and made to turn on one common pin as or Vjournal extended from the side of the d frame work. Above the periphery of the Wheels S and that of a smaller sprocket-wheel U, disposed as seen in Figs. l and 2, an end less chain T extends around and imparts motion to the axle or crank-sh aft?) of said sprock? wheel U. The said crank-shaft is supported on arms c c, projected from the main frame- `vvo1k,a.ndv it has firmly fixed upon it a ratchet d. This ratchet has two pawls e f applied on opposite sides of it and connected by a connecting-rod g, said connecting-rod being jointed to the tail end of the pawl-lever f, and being connected to the oppositeA end lof the other lever-pawl by means of a screw-pin extended through an elongated slot Informed through said connecting` rod or bar. Each pawl is pressedtoward the wheel .by means of spring arranged as seeahat fi There ison the crank-shaft of the said ratchet anotherratchet-Wheel Z, which `is not fastened to ,the shaft b, but is. applied to :.,it so as to'freelyrotate n -it. There is `also an armi placed on the crank-shaftof theiratehetl and made toturn freely onth'e shaf The-,outer end of this arm has a pin fne edthrough it, the pin being made-to eXte, romgeach side of the arm. This pinycarrie aspringpawl 0,Which vis made .to workcinto' the serrated periphery of the last-mentioned'fratchet. Such ratchet is provided. with ajpin m', which extends from the front side 'of it, and during the 4rotationof thera'tchet is successively carried into contact with `each pawl of thecother4 ratchet, so as to elevate said pawl from oft its ratchet. These two pawls are arranged on their ratchets, so that when one is bearing against the radial side ofone of the teeth the other is resting on the middle of i' the other angular side of the tooth onrwhich it bears. Thus when each parti-s lifted-the ratchet-Wheel is set free, so as to be capable of being moved until the other ratchet comes in contact with the next tooth beyond it and arrests the motion of the wheel; rlhe'main ratchet of the crankshaft is thus moved with an intermittent motion and imparts preciselyl such a motion to the cranlr-shaftand its sproeket-wheel U. By means of the endless in g-shaft.

.directions from its middle part.

chainl T the sprocket-wheel U conveys this intermittent rotary motion toits sprocket-wheel S, so as to cause it to turn its barrel and unwind the vcord thereof, so as to allow the weight of the saw-frame to carry such saw-frame down- Ward, the gradual depression of the saw-frame upon the stone during the reciprocating movement of the saw-frame for thepurpose of sawing the stone being' produced by such means.

To the pin n is jointed one end of a connecting-rod p, which at its opposite end is connected with a slotted armof a bent rocker-lever q by means of a set-screw and nut fr, the connecting-rod being made to turn freely on said set-screw, while the set-screw is ixed to the lever in such manner that it may be fastened in position in Whatever part of the slot it may be. The extent of the reciprocating motion of the arm m maybeincreasedor diminished by simply increasing or diminishing the distance of the set-screw'r from the bent rockerlever q. The upper arm of the rocker-lever q is jointed to one end of connecting-rod u, Whose other end is jointed to a crank fu, fixed upon one end of a horizontal shaft w, that rerod e2 jointed to it and extended frmvit toward and jointed to another crank f2, fixed upon a rocker-shaftp2. Said rocker-shaft has two arms or cranks f g extended in opposite A pitman or connecting-rod h is jointed at one end to one or the other of the said arms,-while at the f other end it is jointed to the saw-frame B.

.The object of the two cranks or arms f g so extended in opposite directions above and below the shaft p2 is to enable the connectingrod or pitman'v of the saw-frame to be applied either to that one'` whichis above the shaft p2 when the saw-frame is above the level thereof, or the other of them when the said frame is below the level. If the pawls of the main ratchet, or. that which is fixed to the crank-shaftv f the sprocket-wheel U, are moved out of engagement with their ratchet, a person by laying hold of the crank of said shaft and turning will be enabled toquickly elevate or depress the saw-frame with respect tothe stone as occasion may require.

Horizontally and transverselyover the block of stone is a water-tube 'm2, which is supported in position by two tubes fn. n', which extend down from a shaft o', to one end of which a Water-hose may be attached for the purpose of leading water into the shaft, from whence it will iow from the tubes-'n' n and The said crank has a connectinginto the distributing-tube m2, the lower part of which is punctured with numerous line :holes for the purpose of allowing the water to fall down upon the saws or the stone while they (the said saws) are in operation. A reciprocating movement of the water-distributer isgiven to it by means Iof a connectingrod p and a crank q', the rod being jointed to the crank, which is fixed o'n one end of a shaft w. Y

In Fig-5 I have exhibited a side view of the water-distributer, wherein it will be seen that one of its tubes is provided with a series of hooked pins q2 q2 q2, placed one above the other. That end of the connecting-rod p which operates the Water-distributer is provided with a series of notches, as seen at r2,

vating the connecting-rod from pin to pin the extent of vibratory motion of thewater-distrib-l uter may be proportionably increased, while by means of the notches in the connecting rod or bar the water-distri'buter may be set so 'as to play backward and forward over any particular portion of the upper surface of' the stone which it may be desirable to have it play, rather than over the entire surface of it. We have thus a means of regulating the motion of the water-distributer and 'of causing that motion to take place over' either a portion or the entire sur-face of the stone, as occasion may require. y

Although themachinery which I have hereinbe'fore described is inv many respects like such as is represented in Letters'Patent to which reference has hereinbefore been made, it will be found that in` other respects it differs from such and is much improved, the

main difference-being in the mechanism forA gradually lowering the gang of saws during the operation of the sawing process.

4Vlhat, therefore, I claim is--I 1.` The combination ofthe two spring-pawls, 4their slotted conncctingrod, the movable ratchet and its tripping-pin, with the fixed ratchetof the shaftofjthe'sprocket-Wheel U, the whole being operated and made to operate together, substantially in manner and for the purpose as specified.

2. The series of hooked pins on the waterdistributer, in combination with the series'of notehesapplied'to the connecting-rod for operatingthe Water-distributer, the whole being for the purpose of regulating the motion of the water-distributer and of causing that motionto take place over either a portion or the whole entire' surface of the stone, as oc` casion may require.

In testimony whereof I have hereunto set my signature this'27 th day of May, A. l). 1854.

. ALBERTH. TINGLEY. Witnesses:

-NA'rHANIEL SEARLE, EnAs'rUs L. WALCOTT. 

